<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>字节跳动loading</title>
    <style>
        .spinner{
            margin: 100px auto;
            width: 50px;
            height: 50px;
            text-align: center;
            font-size: 10px;
        }
        .spinner >div{
            display: inline-block;
            width: 5px;
            height: 100%;
            background-color: rgb(43,128,226);
            animation: bytedance 1s infinite;
        }
        .spinner >div:nth-child(2){
            
            animation-delay: -0.9s;
        }
        .spinner >div:nth-child(3){
            
            animation-delay: -0.8s;
        }
        .spinner >div:nth-child(4){
            
            animation-delay: -0.7s;
        }
        .spinner >div:nth-child(5){
            
            animation-delay: -0.6s;
        }
        @keyframes bytedance{
            0% ,40%, 100%{
                transform: scaleY(0.4);
            }
            20% {
                transform: scaleY(1);
            }
        }
    </style>
</head>
<body>
    <div class="spinner">
        <div></div>
        <div></div>
        <div></div>
        <div></div>
        <div></div>
    </div>
</body>
</html>